region: update region-size from 96MB to 256MB.

[LykxSassinator]

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What is changed, added or deleted? (Required)

This pr specify the newly updated configuration change to the default value of region-size, changing it from 96MB to 256MB.

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What is the related PR or file link(s)?

• This PR is translated from: region: update region-size from 96MB to 256MB. docs-cn#18336
• Other reference link(s):

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• Delete files
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[ti-chi-bot]

Hi @LykxSassinator. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[LykxSassinator]

/cc @qiancai

[LykxSassinator]

As discussed offline, please remove the v8.3 tag and hold it until v8.4. /cc @qiancai

[ti-chi-bot]

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[hfxsd]

Suggested change

	> Starting from v8.4.0, the default size of Region is changed to 256 MiB.
	> Starting from v8.4.0, the default Region size has been increased to 256 MiB. When upgrading a cluster to v8.4.0 or later, if you do not adjust the Region size manually, the TiKV cluster's default Region size will automatically update to 256 MiB.